Psychopath - The prototypical psychopath has deficits or deviances in several areas: interpersonal relationships, emotion, and self-control. Psychopaths gain satisfaction through antisocial behavior, and do not experience shame, guilt, or remorse for their actions. Psychopaths lack a sense of guilt or remorse for any harm they may have caused others, instead rationalizing the behavior, blaming someone else, or denying it outright. Psychopaths also lack empathy towards others in general, resulting in tactlessness, insensitivity, and contemptuousness. All of this belies their tendency to make a good, likable first impression. Psychopaths have a superficial charm about them, enabled by a willingness to say anything without concern for accuracy or truth. Shallow affect also describes the psychopath's tendency for genuine emotion to be short lived and egocentric with an overall cold demeanor. Their behavior is impulsive and irresponsible, often failing to keep a job or defaulting on debts. Psychopaths also have a markedly distorted sense of the potential consequences of their actions, not only for others, but also for themselves. They do not deeply recognize the risk of being caught, disbelieved or injured as a result of their behaviour. Researcher Robert Hare, whose Hare Psychopathy Checklist is widely used, describes psychopaths as 'intraspecies predators'. Also R.I. Simon uses the word predator to describe psychopaths. Elsewhere Hare and others write that psychopaths 'use charisma, manipulation, intimidation, sexual intercourse and violence'to control others and to satisfy their own needs. Hare states that: 'Lacking in conscience and empathy, they take what they want and do as they please, violating social norms and expectations without guilt or remorse'. He previously stated that: 'What is missing, in other words, are the very qualities that allow a human being to live in social harmony'. According to Hare, many psychopaths are superficially charming, and can excellently mimic normal human emotion;[9] some psychopaths can blend in, undetected, in a variety of surroundings, including corporate environments.